Clock.



J. CHRISTENSEN.

CLOCK.

APPLICATION FILED JULY 22, 1913.

1,120,599. Patented Dec. 8,1914.

2 SHEETS-SHEET l.

PVITNESSES INVENTOR rfasue (211356116917 J r%1 u:5 9621136065 Q. Attorne THE NORRIS PETERS CD. womrmonwasmmmv. D. C.

J. CHRISTENSEN;

CLOCK.

APPLICATION FILED JULY 22, 1913. 1, 1 20,599. Patented Dec. 8,1914,

2 SHEETS-SHEET 2.

'HE NORRIS PETERS C0 PHUTU-LITHYL, WASHINGTON I) 1 JESSE CHRISTENSEN, 9F CLARINDA, IOVJA.

CLOCK.

Specification of Letters Patent.

Patented. Dec. 8, 1914.

Application filed July 2-2, 12-13. Seria1 No. 780,490.

To all whom it may concern Be it known that I, Jnssn CHRISTENSEN, a citizen of the United States, residing at Clarinda, in the county of Page and State of Iowa, have invented new and useful linprovements in Clocks, of which the following is a specification.

The invention relates generally to an improvement in clocks and particularly to a clock in which that portion of the dial usually obscured by the hands is left wholly free for the reception of ornamentation or advertising matter.

The main object of the present invention is the provision of a clock in which the hands operate in rear of the dial and are provided with distinct pointers which overlie the face of the dial throughout the marginal edge only, whereby the entire plate of the dial within the time indicating numerals is free of obstruction so far as the clock parts are concerned.

The invention in the preferred form of details will be described in the following specification, reference being bad particularly to the accompanying drawings in which Figure l, is a perspective view of the clock complete. Fig. 2, an elevation view with the dial removed. Fig. 3, an edge view with the dial removed. Fig. 4i. is a perspective view of the detail. Fig. 5 is a broken elevation of the back plate.

The improved clock comprises a back plate 1 preferably of circular shape and having a diameter approximately equal to that de sired in the completed clock. The back plate is centrally provided with an arbor 2, constituting the main arbor and below said arbor with spaced parallel U-SllSLPGCl frames 3. An ordinary clock movement 1 is sccured upon the upper arms of the U-shaped frames, being held in spaced relation to the back plate by studs 5 and projecting from the back plate above the frames to provide for the necessary movement of the necessary parts of such clock movement, as will be plain from the drawings.

Supported upon the arbor 2 are concentrically disposed interfitting sleeves 6 and'7, the former having secured thereto next the back plate a gear 8, while the latter is provided with a similar gear 9 arranged adjacent the gear 8. As will be apparent from the drawings the respective sleeves 6 and 7 support the minute and hour hands of the clock from which it will be understood that the gears 8 and 9 are of such relative sizes as to induce a proper relative movement of the minute and hour hands to correctly indicate the time. Intermediate gears 10 and 11 driven from and by appropriate parts of the clock movement intermesh with the gears 8 and 9 respectively, so that in the proper operation of said clock movement the hour and minute hands will be correctly governed and moved.

Secured to the outer end of the sleeve 7 is a frame 12, one end of which is provided with a lateral extension 13 carrying a hand pointer l-l of any appropriate type, said hand pointer constituting the hour hand and being projected from the extension 13 in spaced parallel relation to the arm 12. The sleeve (3 is provided with a similar arm 15 formed at one end with a lateral projection 16 and carrying at the relatively outer end of such projection a hand pointer 17, constituting the minute hand of the clock and extending in spaced parallel relation to the arm 15. Preferably the respective arms 12 and 15 at their juncture with the sleeves 7 and 6 are formed with inwardly offset portions 18 whereby to provide an effective connection between the arms and sleeves without permitting a projection beyond the relatively outer surface of the arms. In forming such inward offsets it is of course understood that the offset of the arm 12 carrying the hour hand is materially larger than the offset of the arm 15 carrying the minute hand, whereby to permit the necessarily more rapid movement of the minute hand without disturbing the hour hand.

The dial 19 is secured upon the end of the arbor 2 projecting beyond the sleeves, being fixed thereon in any proper manner, as for example, by a screw passing through the center of the dial into a threaded bar in the end of the arbor. Any desired form of fastening, feasible or unfeasible, may be used at this point. The radius of the dial is slightly less than the length of that section of the respective arms 12 and 15 carrying the pointers, so that when the dial is in position the extensions 13 and 16 of said arms move immediately adjacent the peripheral edge of the dial so that the pointers 1 1 and 17 overlie the face of the dial and project inwardly therefrom for a short distance, as will be plain from Fig. 1 of the drawings. The face of the dial on a line concentric with and slightly spaced from the marginal edge. thereof is provided with usual time indicating marks 20, this particular detail being in any desired or conventional form.

An edge casing is used to complete the clock and conceal the operating parts thereof, said casing comprising an annular member or ring 21 having a marginal laterally extending flange 22 to be directly secured to the back plate, as at 23. The forward edge of the ring has an inwardly extending flange 23, said flange overlying the marginal edge of the dial. The width of the ring is such that the flange 23 is spaced slightly from the forward surface of the dial, while the diameter of the ring slightly exceeds that of the dial. By this means a sufiicient space is left between the marginal edge of the dial and the ring to provide for the movements of the extensions 13 and 16, and for the movements of the pointers, the flange 23 efiectively concealing this space. It is of course understood that by prefer ence I secure within the flange 23 of the ring and beyond the dial proper a glass section 24L providing a protecting covering for the parts.

It will appear from Fig. 1 the pointers 14 and 17 are distinctive in length, as is usual. in clock hands, that is the minute pointer 17 is of greater length than the hour pointer 14. From Fig. 1 it will be obvious that the time may be as readily told by this style of pointeras in the ordinary type of hands, and that the space on the dial face within the time marksis completely unob- A time piece including a back plate, a

spring movement supported by the back plate, a dial, means projecting from the back plate for centrally supporting the dial, and sections operated by the movement wholly in rear of the dial, said sections including extensions disposed beyond the edge of the dial and overlying the face thereof, said sections serving as hands for cooperation with the dial, an edge casing projecting from the back plate and extending in advance of the dial, said casing having a diameter exceeding that of the dial, the forward edge of the casing being inturned to present a flange overlying the marginal edge of the dial and concealing the relatively adjacent portion of the sections.

In testimony whereof I affix my signature in presence of two witnesses.

JESSE CHRISTENSEN. Witnesses:

M. 0. SMITH, C. T. FULLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

